title: Pathogens involved in lower respiratory tract infections in general practice.
mesh_terms: D000293:Adolescent; D000328:Adult; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009426:Netherlands / Q000453:epidemiology; D011446:Prospective Studies; D012141:Respiratory Tract Infections / Q000382:microbiology* / Q000821:virology; D012698:Serologic Tests